Hey Justin, do you have a reference for your CM? I'm having trouble seeing the eagle. I'd like to track down another.
Sorry for the delay. Here's the attribution details: Octavius Augustus, Ruled 27 BC - 14 AD, AE As, Turiaso Mint Obverse: IMP AVGVSTVS PATER PATRIEA, laureate bust right, legionary Eagle Head countermark. Reverse: L MARIO L NOVIO MVN TVRIASO, II VIR within wreath. @RAGNAROK also shared this resource too: https://www.tesorillo.com/articulos/caesarea/aguila.htm Thanks, @TIF! That was exactly what @RAGNAROK did when he discovered and identified the c/m for my coin.
Here is a countermark from Byzantium (pre-Byzantine era). I posted this a while back. I bid on it because I found a similar example sold on Forvm, with this description: "The Π in the countermark is a local archaic form of the letter B used at Byzantium. David Sear notes, "at this time [when the counter mark was applied after c. 280 B.C.], the Byzantines were subject to continual threats by Gaulish invaders, who were bought off by the payment of huge annual tributes. The impoverished city had to resort to countermarking foreign coins in place of a proper currency." GS58875. Silver drachm, Price 1499, c/m: SGCV 1585 (Byzantium, after c. 280 B.C.)..." Mine is on a drachm of Philip III Arrhidaios (I think). The Forvm listing photo looked a lot like this one, but provided no description - I am guessing on "ship's prow." Any other info or examples would be greatly appreciated. Byzantium - Countermark on Macedonian Kingdom Philip III Arrhidaios drachm Kolophon? (c. 323-319 B.C.) Countermark: after 280 B.C. Head of Herakles right, wearing lion-skin. cm: ΠU over ship's prow (?) / FILIPPOU Zeus seated left, monogram left. SCGV 1585 (countermark) (4.00 grams / 17 mm) I used to be a pretty enthusiastic collector of modern countermarks/counterstamps and chopmarks. But like I said, I never had an ancient before. Below is a sample from this modern collection (yeah, you can make fun of that Azores crowned GP on a US half dollar, but I've looked at a lot of these and I really do have some faith it is not a fake ):
Mirrored PR (Populus Romanus), civil war c/m (68-69 AD according to my and J.Scaliger chronology) on a Lugdunum mint Nero As/Dup.
Forgot about this one until just now. Possibly a mardin countermark on a Constans II follis, but I nothing about these or even which way is up. If someone could point me in the right direction, I would be grateful.
@Alegandron & @chrsmat71 Very cool multi-countermarked coins! I just picked up one of this type myself and after doing some research found this page about this multi-c/m coinage from the Moesia (Balkans/Bulgaria) area: http://romancoins.info/CMK-Ephesus-Aug.html Mine is supposedly Augustus from Ephesus, but it is so worn that I cannot be sure. I'd like to think I can make out his profile on the obverse and possible a wreath shape on the reverse (with the blue/green acting to contrast the wreath leaves)... I need to give it a brushing and Verdicare dip when I get it home. You can see the close-ups of the countermarks: helmet with dot(s) and other intricate design (see below for more detailed one); standard incuse AVG; incuse TI•CAE (AE ligate, se below), and finally incuse dolphin swimming right, dorsal fin at top, and what appears to be a circle in top right. As mentioned, here is a more detailed version of obverse c/m's from the page linked earlier. There is also one from CNG here (maybe mine is similar to this one?): https://www.cngcoins.com/Coin.aspx?CoinID=119733